<?php
echo "<a href = 'o.php?id=$id'>".$full_name."</a>";
$birthday = explode("-", $birthday);
echo " Sinh nhật: <a href = 'birthday.php'>".$birthday[2]."-".$birthday[1]."-".$birthday[0]."</a>";
echo " Học trường: <a href = 'g.php?id=$schoolId'>".$school."</a>";
$registerDay = explode("-", $registerDay);
echo " Ngày đăng kí: 
<a href = 'singup-day.php'>".$registerDay[2]."-".$registerDay[1]."-".$registerDay[0]."</a>";
?>